All my rules worked fine with Drools 3. NowI am trying to upgrade to Drools 5.
I am using the following jar files to create binary (jar) files for my rules from command line:
antlr-runtime.jar, drools-api.jar, drools-compiler.jar, drools-core.jar, drools-decisiontables.jar, drools-jsr94.jar, drools-templates.jar, janino-2.5.15.jar, joda-time.jar, jsr94.jar, jxl.jar, mvel2.jar, xpp3.jar, xpp3_min.jar, xstream.jar, org.eclipse.jdt.core_3.6.1.v_A68_R36x.jar
This is my DSLR:
package cit.coverage;
expander Coverage.dsl
rule "rrr"
auto-focus true
when
He is nice
then
He is happy
end
This is my DSL Coverage.dsl:
[condition][]He is nice=eval(true)
[consequence][]He is happy=eval(System.out.println("HA HA"))
I am trying to create binary(jars) using the following code:
KnowledgeBuilderConfiguration kbc = KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration();
kbc.setProperty("drools.dialect.java.compiler", "JANINO");
KnowledgeBuilder builder = null;
builder = KnowledgeBuilderFactory.newKnowledgeBuilder(kbc);
Reader drlSource = new InputStreamReader(RVEngine.class.getResourceAsStream(ruleset.getDrlSource()));
//ruleset.getDrlSource() = com/cit/myDrl.dslr
Reader dslSource = new InputStreamReader(RVEngine.class.getResourceAsStream(ruleset.getDslSource()));
builder.add(ResourceFactory.newReaderResource(dslSource), ResourceType.DSL);
builder.add(ResourceFactory.newReaderResource(drlSource), ResourceType.DSLR); ß problem
KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
kbase.addKnowledgePackages(builder.getKnowledgePackages());
no matter what I type in my dslr (drl) file I get the following exception on the highlighted line;
I have 1 rule or 0 rule it still throws the same exception. Does it have to do with any jar files?
Caused by: java.lang.NullPointerException
at org.drools.compiler.PackageBuilder.validateUniqueRuleNames(PackageBuilder.java:830)
at org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:555)
at org.drools.compiler.PackageBuilder.addPackageFromDslr(PackageBuilder.java:355)
at org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:461)
at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28)
saleem
-----Original Message-----
From: rules-users-bounces@lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Wolfgang Laun
Sent: Friday, March 04, 2011 2:14 AM
To: Rules Users List
Subject: Re: [rules-users] Problem creating package -validateUniqueRuleNames(PackageBuilder.java:830)
It could be an error in the DSL file. Check for errors after *each*
builder.add(...).
-W
2011/3/4 Saleem Lakhani <Saleem.Lakhani@citizensfla.com>:
> Following is my code:
>
>
>
> KnowledgeBuilderConfiguration kbc =
> KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration();
>
> kbc.setProperty("drools.dialect.java.compiler", "JANINO");
>
> KnowledgeBuilder builder = null;
>
> builder = KnowledgeBuilderFactory.newKnowledgeBuilder(kbc);
>
>
>
> Reader drlSource = new
> InputStreamReader(RVEngine.class.getResourceAsStream(ruleset.getDrlSource()));
> //ruleset.getDrlSource() = com/cit/myDrl.dslr
>
> Reader dslSource = new
> InputStreamReader(RVEngine.class.getResourceAsStream(ruleset.getDslSource()));
>
>
>
> builder.add(ResourceFactory.newReaderResource(dslSource), ResourceType.DSL);
>
> builder.add(ResourceFactory.newReaderResource(drlSource),
> ResourceType.DSLR);
>
>
>
> KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
>
> kbase.addKnowledgePackages(builder.getKnowledgePackages());
>
>
>
>
>
> no matter what I type in my dslr (drl) file I get the following exception on
> the highlighted line; ANY IDEA????
>
> I have 1 rule or No rule it still throws the same exception. Does it have to
> do with any jar files?
>
>
>
> Caused by: java.lang.NullPointerException
>
> at
> org.drools.compiler.PackageBuilder.validateUniqueRuleNames(PackageBuilder.java:830)
>
> at
> org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:555)
>
> at
> org.drools.compiler.PackageBuilder.addPackageFromDslr(PackageBuilder.java:355)
>
> at
> org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:461)
>
> at
> org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28)
>
>
>
>
>
> saleem
>
>
>
> _______________________________________________
> rules-users mailing list
> rules-users@lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
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